Detachable cap



A. G. NORTON.

DETACHABLE CAP.

APPLICATIQN FILED DEC.26, 1919.

1373,0952. Patentod Mar. 29, 192 1.

llll H l'llllll EH up a iIlrIl llllllllllllli. 10 7 9 INVENTOR.

I 9 ATTORNEYS.

b 1 n3. EL

AREH R magnet, on a ceasm ,mwom 9 Z To all whom it mag concern: Be it known that 1-, ARTr IUR G; NORTON, a citizen of the United Statcsandresident of Rochester, in the county of Monroe and State of "New York, have invented certain new and useful Improvementsin Detachable Caps, of which the following is a specifica tion. i

V The present'invention relates to detach- V able. caps for objects of; various kinds, be-.

mg in this instance illustrated as embodied 'ina dust captor tirevalves and as a cap for automobile yradia tors or other recepta cles; An object of this invention isto'w pro; vide a. cap which. may be quickly appliedto and removedirom' the part vwhich it is. to

coveraandwhile upon said part, beingefie'etively secured in place. Another object of.

; v the invention is ,to', provide'a retaining fitting of thecap to" the part which it is to means on the cap which will yield upon the cover and automatically enter i into interf locking engagement-with such part. ,A furtherobject of'the invention is to provide al' retaining means for the cap arranged so as to exclude dust from theinterior of the cap;

' A still further object ofthe inventionis to provide means about the valve stem of an automobile tire with which yielding means 7 "on the valve cap may interlock. V p

H i To these. and-other ends the invention consists of-certain parts'jand combinations of parts," all jot which'fwill be hereinafter .describe'd, the novel features being pointed out inthejappende'd claims.

Inthedrawingsq I Figur'e'l'is a side view I i of the invention designed for covering aitire valve, partsbeinginsection; 1 -v Fig; 2is'anenl'arged'detail view showing the nut applied to the tire valve; 7

Fig. 3 is-a view of the closed end of the Fig. d is a view in elevatign of the cap shown in Fig.1; I p

Fig. 5 is a view of the open end of the 7 cap showingthe retaining devices in position to engage the valve stem; 1 V

Fig. 6 is a view showing the nut of Fig. 1 in side elevation with a fragment of the cap connected to the nut, the cap being 7 V I I of the spring 14 sovthat when the annular shown in section;

Fig. 7 is a section on the line Fig; 6; Fig. 8 is a fragment of an automobile V of one, embodiment i and. cause 7 the ca lsp i ibn of Leirs we Peshawar. 29,1921." hpplicatioh filed December 26,1919; seri inq. 347,255." "if Fig-i=9 shows the intention embodied in a cap for an automobile radiator, a, fragment of the radiator being-shown in side ele'v'a? tionand thecap beingishownin section; and

"Fig. lO isa sectionfon'the line 19, 10, n

eferringfirst to th embodimenc 6f the cates the valve steni'jof a pneumatic tire {or lindricalportion '3 and tiie vaiversteuis '1 is:

with an annular quanta;

afcap 6 which, in'thisinstance, isf formed i I constructed'pret-T r erably by makingthe cap 6 of'two pieces,"

8 and thence axially at 9to provide'an annular flange in which a flange on the.

other' piece ll i's rec'eived.

'i' The retai 'ng mean's'is mounted" in instance, in this channel and comprises prefso" erably two retaining devices 1 2ipivoted ,be-

tween their ends at 13, on axes which extend V in the 'direction of thejkax'is of the ca A single spring may act on these retaining dev ces to move them inwardly inlorlder to yieldingly engagwiththe anchoring means; Th s spring, in this instance, 'is coiled at 14L; i about a pin 15 in the channel" 7 andihas.

two oppositely extending spring arms 16 ;for'

engaging with the two retaining devices i o the end of providing for the manual c. I

operation" of these retaiiiingfl devices, eacl i of them may be provided. with a handle'or operating "portion .which f may be ex-j tended through anopening718 in the chan-Y nel portion of the cap." iththe purp se in view of preventing the entrance of dust between the two operating portions of the retainingdevices, a rubber iece or member,

s 19 is positioned between sue operating portions so as to close the opening in the channel when the retaining vdevices are inter- 7 locked with the'anchoring means. i r r v In the useof this form of the invention, the cap is fitted over the stem untilthezretaining devices cooperate with the tapered 'portionwhich moves them against the action groove 4. is reachedythey will spring into said groovexunder the action of the spring to interlock withthe an-I choring nut on t e valve stem. In the 'eIn-f 1 about the filling opening of a radiator of and automobile. Like reference characters used .rior annular channel carryingmeans, preferbodiment shown in Figs 81:0 10 the parts are the same, except that the anchoring means' is not in the form of a nut, but is provided in this form ofthe invention will'referto like or similar parts in the embodimentof the invention shown in Figs. 1 to 7 From theforegoing it will befseen that there has been provided a cap with a inteably yielding, to interlock with the portion received within 5 the cap. This yielding means may be manually operable andcomprises retainers pivoted about axes extending in theidirection of the axis of the cap so that the tendency of the retainers to swing on the axes whilethe cap is in position iseliminated, The cap is sojconstructed that dust is excluded from the interior thereof. The 1 anchoring means is of novel :form and permit's yielding means. on the 'cap. to readily interlock'therewith. This 'anchoring means cooperates with the yielding means to cause the latter to'enter'a groove in. such anchoring means, The anchoring means may be arranged about a, tire valve and may be in the form of a nut formed with-a tapered portion and a groove, or it may be inthe form .of a. separatesleeve with a groove and a nut holding the sleeve iii position and tapered to cause the yielding" meansto enter the groove. I v l 7 i 'What I' claim as my invention and to secureby Letters Patent is 1 1. The combination with a part to be covered of a cap-therefor having ajpair of retainers pivotedon the cap onaxes extending in the direction of the axis of the cap and having operating portions situated in prox ing on both ofsaid retainers.

imity to each other and a single spring act- 2. The combination with apartto'he covered, of a cap therefor having an interior annular channel; two retainers pivoted bea tween their ends in the channel about axes extendingin the direction of theaxis of the cap and having operating portions situated in proximity to each other,' and a :single retainers at thefopening.

desire spring anchored inlthe channel between the opposed ends of theretainers and'having oppositely extending arms engaging the re tainers to hold the latter in the retaining portions. 7

3; The comb nation with a part to be covered, of arcap therefor having an interior annular channel, two retainers plvoted bea; Thecombination with a part to be sovieredi of a cap therefor having an interior annular channel. provlded-lwith an opening ing dust 'excluder arrangedbetween the two 5. Thevcombin'ation with valvestem, ofranchoring means. surroundmg a screw saidstem, a cap adapted to'fitov'er saidanchoring -means and having interiorlyr arranged yieldlng means for cooperating with the exterior of the anchor-mg. means, and

' mean s "manually; operable from the exterior of the cap for expanding said yielding means to permit the removalof the cap.

-' 6; The combination with a partto be covered having an external cylindric'ally formed portion formed with an'flexternalcircumfereiitial groove andan external tapered portion, of a cap fittingoversaid cylindrically formed portion andlhaving:interiorly arranged yielding means I cooperating with said tapered portionlto enter the external V groove, and means manually'operable from the exterior of the cap for expanding said yielding" means to permit the-removal of the capif' '1 f ART UR GI NeRTo'Nf.

v r in its wall, tWO" 1el3fl111 Gl'S IIlOllljltGdlIl the channel and having operating portions .extending through the opening, and a. yield- 

